Architectural and space-planning solutions

The premises of the existing boiler house are located on the 1st floor of a residential building built in 1886. Above are the living quarters. The scope of technical re-equipment includes: Dismantling of the existing chimney; dismantling of the existing floor and installation of a new one; arrangement of two pits for collecting water and discharging engineering networks; dismantling of internal partitions; replacement of doors, windows, louvres, deflectors; laying a part of the opening under the louvre; dismantling the visor above the entrance and installing a new one; interior decoration; exterior wall decoration. The central heating point (CHP) is designed in the existing dimensions of two rooms (7,69 x 5,13 m and 7,8 x 5,14 m). For a relative mark of 0,000, the mark of the level of the finished floor of room 1 was taken, which corresponds to the absolute mark of 4.14. Clear height (from floor to ceiling) - variable: in room 1 - 3,375 m, in room 2 - 3,835 m. In the premises of the central heating station, self-leveling polymer floors are designed with slopes to the drains of the sewerage system. The pits are closed with a corrugated sheet. Descent into the pits - with the help of an attached metal ladder. Finishing of internal walls and ceiling - plastering with cement-sand mortar along the grid, followed by painting with acrylic-water-dispersion paint. Windows - made of PVC profiles filled with single-chamber double-glazed windows.

Engineering equipment, utility networks, engineering activities

The heat supply of the CHP is provided according to the conditions of connection. Connection point on the section between TK-108 and TK-110. The thermal power of the central heating station is 1,54 MW / 1,324 Gcal / hour. Connected loads, taking into account the reserve and losses in the networks - 1,294 Gcal/hour. The heat carrier is water with Т1/Т2 =150/70°С. Pressure difference at the connection point: P1-P2=62 m of water. Art., Р2=18 m of water. Art. The heat supply scheme is two-pipe. Reliability category 2nd. The laying of the heating network is provided for underground channel and channelless, using seamless steel pipes according to GOST 8732-78 in polyurethane foam insulation with ODK and flexible pipes "CASAFLEX" made of corrugated stainless steel in polyisocyanurate foam insulation. To receive thermal energy, adjust the parameters of the coolant and supply heat to consumers, a device is provided in the building of the boiler room of the central heating unit (CHP) with circulation pumps from Wilo with frequency regulation. Connection of heating systems according to an open circuit with a control 2-way valve that ensures the temperature of the heat carrier of the heating system in accordance with the outdoor temperature. Estimated values ​​of temperature of heating systems - Т1.1./Т2.1=95-70°С. It is planned to equip heat supply systems with a set of shut-off and control and safety valves, as well as heat metering units based on a PREM-50 heat meter with a heat meter from NPF Teplocom. Water supply and sanitation - in accordance with the conditions of connection. Water supply (cold water) for consumers of the facility is not required. Water for wet cleaning in the amount of 0,04 m3/day (1 time per month) is provided by imported water. External fire extinguishing is provided from the existing fire hydrant No. 35, on the public water supply network with a diameter of 225 mm. Water consumption for external fire extinguishing - 10 l / s. Disposal of domestic wastewater in the amount of 0,20 m3/day (1 time per year for 4 hours), 0,04 m3/day (1 time per month) is provided for one outlet into the well 36a on the yard combined communal sewerage network with a diameter of 250 mm. At the outlet from the central heating station, it is planned to install a cooler well, a control well and a well with shutoff valves. The drainage of rainwater from the roof and the adjacent territory with a flow rate of 4,20 l / s is provided for in the existing storm water wells No. 232a and 35a on the yard combined communal sewerage network. Pragma polypropylene pipes with a diameter of 160/139 mm were selected for laying the sewer network. An industrial sewerage system has been designed for the facility. For the device of the industrial sewerage system, cast-iron pipes were selected - sewer pipes according to GOST 6942-98. The power supply of the central heating point, located on the intra-yard territory, in normal mode is provided from the public electric networks of the centralized power supply system, according to the technical specifications. Estimated power 21,6 kW, voltage class 0,4 kV, connection points - RUNN 0,4 kV in the new RTP - along the lane. The category of power receivers in terms of power supply reliability is the second, it is provided from two independent mutually redundant sources, the power receivers of security systems (of the first category) are provided from the UPS, in case of a long power outage - from a mobile engine-generator set. The grounding device of the central heating substation consists of a common artificial external grounding and a natural grounding conductor - the foundations and the floor of the building. Electricity metering devices are installed at the border of the balance sheet in the RUNN 0,4 kV TP - 5616 and on the panels of the ASU of the central heating station. The device of distribution and group networks - according to the standards, protective devices are installed on the panels of the ASU and local shields, lighting control devices and sockets for portable electrical receivers - on the walls. Grounding of open conductive parts of electrical equipment - through PE conductors in cables of a group and distribution network, the type of grounding system for open conductive parts is TN-S (separate), the equalization system and potential equalization comply with the standards. The adopted circuit design solutions of the electrical installation being designed ensure the electrical safety of non-categorized and operational personnel (solid insulation, shutdown of non-stationary processes, absence of contact voltage, etc.). Lightning protection of the building is provided by lightning rods on the roof of the building and down conductor devices connected to the ground electrode system. Automation of production processes and security systems was carried out in accordance with the standards. Radio channels are used to transmit information to the control room and the private security panel. Heating of the premises of the central heating station is designed to maintain a temperature not lower than +5 ° C, and is solved at the expense of heat gains from process equipment and pipelines. In emergency mode, installation of electric heating devices (convectors) is provided. Supply and exhaust ventilation is provided in the central heating room, designed for a single multiple air exchange of general ventilation during the cold season and for the assimilation of excess heat during the transition period. The air inflow is designed through the louvered grille in the outer enclosures. Air removal - through a deflector, brought out above the roof of a residential building.